/* -----------------------------------------------------------------
 * Programmer(s): Daniel R. Reynolds @ SMU
 * -----------------------------------------------------------------
 * SUNDIALS Copyright Start
 * Copyright (c) 2002-2021, Lawrence Livermore National Security
 * and Southern Methodist University.
 * All rights reserved.
 *
 * See the top-level LICENSE and NOTICE files for details.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 * SUNDIALS Copyright End
 * -----------------------------------------------------------------
 * This is the header file for the ARKBBDPRE module, for a
 * band-block-diagonal preconditioner, i.e. a block-diagonal
 * matrix with banded blocks.
 * -----------------------------------------------------------------*/

#ifndef _ARKBBDPRE_H
#define _ARKBBDPRE_H

#include <sundials/sundials_nvector.h>

#ifdef __cplusplus  /* wrapper to enable C++ usage */
extern "C" {
#endif


/* User-supplied function Types */

typedef int (*ARKLocalFn)(sunindextype Nlocal, realtype t,
                          N_Vector y, N_Vector g, void *user_data);

typedef int (*ARKCommFn)(sunindextype Nlocal, realtype t,
                         N_Vector y, void *user_data);

/* Exported Functions */

SUNDIALS_EXPORT int ARKBBDPrecInit(void *arkode_mem,
                                   sunindextype Nlocal,
                                   sunindextype mudq,
                                   sunindextype mldq,
                                   sunindextype mukeep,
                                   sunindextype mlkeep,
                                   realtype dqrely,
                                   ARKLocalFn gloc,
                                   ARKCommFn cfn);

SUNDIALS_EXPORT int ARKBBDPrecReInit(void *arkode_mem,
                                     sunindextype mudq,
                                     sunindextype mldq,
                                     realtype dqrely);

/* Optional output functions */

SUNDIALS_EXPORT int ARKBBDPrecGetWorkSpace(void *arkode_mem,
                                           long int *lenrwBBDP,
                                           long int *leniwBBDP);

SUNDIALS_EXPORT int ARKBBDPrecGetNumGfnEvals(void *arkode_mem,
                                             long int *ngevalsBBDP);

#ifdef __cplusplus
}
#endif

#endif
